explain and draw three internal parts of the CPU
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Answer:
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Central Processing Unit
The Central Processing Unit (CPU; sometimes just called processor) is a machine that can execute computer programs. It is sometimes referred to as the brain of the computer.
There are four steps that nearly all CPUs use in their operation: fetch, decode, execute, and writeback. The first step, fetch, involves retrieving an instruction from program memory. In the decode step, the instruction is broken up into parts that have significance to other portions of the CPU. During the execute step various portions of the CPU, such as the arithmetic logic unit (ALU) and the floating point unit (FPU) are connected so they can perform the desired operation. The final step, writeback, simply writes back the results of the execute step to some form of memory.
Random Access Memory
Random access memory (RAM) is fast-access memory that is cleared when the computer is power-down. RAM attaches directly to the motherboard, and is used to store programs that are currently running. RAM is a set of integrated circuits that allow the stored data to be accessed in any order (why it is called random). There are many different types of RAM. Distinctions between these different types include: writable vs. read-only, static vs. dynamic, volatile vs. non-volatile, etc.
Firmware
Firmware is loaded from the Read only memory (ROM) run from the Basic Input-Output System (BIOS). It is a computer program that is embedded in a hardware device, for example a microcontroller. As it name suggests, firmware is somewhere between hardware and software. Like software, it is a computer program which is executed by a microprocessor or a microcontroller. But it is also tightly linked to a piece of hardware, and has little meaning outside of it. Most devices attached to modern systems are special-purpose computers in their own right, running their own software. Some of these devices store that software (“firmware”) in a ROM within the device itself
Power Supply
The power supply as its name might suggest is the device that supplies power to all the components in the computer. Its case holds a transformer, voltage control, and (usually) a cooling fan. The power supply converts about 100-120 volts of AC power to low-voltage DC power for the internal components to use. The most common computer power supplies are built to conform with the ATX form factor. This enables different power supplies to be interchangable with different components inside the computer. ATX power supplies also are designed to turn on and off using a signal from the motherboard, and provide support for modern functions such as standby mode.
Removable Media Devices
If your putting something in your computer and taking it out is most likely a form of removable media. There are many different removable media devices. The most popular are probably CD and DVD drives which almost every computer these days has at least one of. There are some new disc drives such as Blu-ray which can hold a much larger amount of information then normal CDs or DVDs. One type of removable media which is becoming less popular is floppy disk
Answer:
A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry within a computer that executes instructions that make up a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program. The computer industry used the term "central processing unit" as early as 1955. Traditionally, the term "CPU" refers to a processor, more specifically to its processing unit and control unit (CU), distinguishing these core elements of a computer from external components such as main memory and I/O circuitry.
Explanation:The control unit handles the fetch/execute cycle. It may handle the registers dealing with control.
The control unit handles the fetch/execute cycle. It may handle the registers dealing with control.The arithmetic/logic unit handles everything that isn't a control operation/register.
The control unit handles the fetch/execute cycle. It may handle the registers dealing with control.The arithmetic/logic unit handles everything that isn't a control operation/register.These are the only two functions that are present in any microprocessor. Back when the central processor was a fair chunk of metal, the distinction was minimal. The SSEM had no registers other than the control registers and there was a microprocessor that just provided 8K of RAM that you could do what you liked with instead of having data registers. The SSEM didn't use a microprocessor and the latter system was very unusual, but the point being made is that some things are extras, they're not properties of microprocessors but of design choices.
The control unit handles the fetch/execute cycle. It may handle the registers dealing with control.The arithmetic/logic unit handles everything that isn't a control operation/register.These are the only two functions that are present in any microprocessor. Back when the central processor was a fair chunk of metal, the distinction was minimal. The SSEM had no registers other than the control registers and there was a microprocessor that just provided 8K of RAM that you could do what you liked with instead of having data registers. The SSEM didn't use a microprocessor and the latter system was very unusual, but the point being made is that some things are extras, they're not properties of microprocessors but of design choices.It's hard to think of a third thing that is common. Not all processors have FPUs. Not all processors have cache. Registers are ALU but not all processors have them anyway. Processor-in-Memory is a perfectly good architecture and subverts just about everything you ever thought you knew. The x86 is hybrid CISC/RISC, so has a microcode layer. Actually, a lot of processors have support for microcode. I have grave difficulty imagining the 6502 or Z80 using it, they always seemed fairly hardwired on the logic front.
The control unit handles the fetch/execute cycle. It may handle the registers dealing with control.The arithmetic/logic unit handles everything that isn't a control operation/register.These are the only two functions that are present in any microprocessor. Back when the central processor was a fair chunk of metal, the distinction was minimal. The SSEM had no registers other than the control registers and there was a microprocessor that just provided 8K of RAM that you could do what you liked with instead of having data registers. The SSEM didn't use a microprocessor and the latter system was very unusual, but the point being made is that some things are extras, they're not properties of microprocessors but of design choices.It's hard to think of a third thing that is common. Not all processors have FPUs. Not all processors have cache. Registers are ALU but not all processors have them anyway. Processor-in-Memory is a perfectly good architecture and subverts just about everything you ever thought you knew. The x86 is hybrid CISC/RISC, so has a microcode layer. Actually, a lot of processors have support for microcode. I have grave difficulty imagining the 6502 or Z80 using it, they always seemed fairly hardwired on the logic front.However, CPU classes go on about microcode, as if it mattered, and the x86 and Transmeta architectures use(d) it extensively. Not convinced it's justifiable as the third module. The first two are solid and registers are definitely not an independent unit. I'm going to say microcode is the answer they want for the third.
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